EMF Measurement Equipment & Shielding Materials
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LATNEX PM-120W (SO239) V.S.W.R. & Power Meter

PM-120W (SO239) V.S.W.R. & Power Meter

$48.00 $52.99

Forward and reflected power direct digital readout, without any calibration.
Maximum measurable power range up to 120W.
low insertion loss (0.3 decibels or less) structure allows it to be permanently connected.
Build in Frequency counter .
All Function display ( Frequency,Power , SWR,FW,RW,Battery Level)

Feature & Specification
Frequency range: 125 - 525MHz
Measurable power range: 0.5 - 120W(+-0.5%)
Input  read frequency counter (must be < 0.5 W)
Maximum power: 120W
Impedance: 50Ω
Size: W 76 X H 77 X D35 mm.
Weight: < 220 grams
Battery : 3.7V Li-ion Rechargeable Battery

* Not for the DMR digital radio.

Interface: SO239

MAX. Power in 120 W        (Measurable power,Radio must be ANALOG)
V.S.W.R 1.00~19.9
Frequency Ranger COVER : 125MHz~525MHz
Insertion Loss < 0.15dB(VHF) , < 0.25dB(UHF)
Temperature 0℃~60℃
Frequency counter Yes (  TX input  must be minimum 0.5W + - 0.5%)
Battery Display Yes
Battery Build-in 3.7V  Li-ion Battery
Auto Power Off 1-9 mins
Size 66*68*37 (mm)
Charger in  5V (micro usb)
Backlight AUTO OFF  
Interface (in and out ) N-connector
Weight 220g (include battery)

 

  • Power ON/OFF:

Press 2 second the [Red button] to power on or power off

MENU Dispaly  (Note: Version for up to V3.8)

No. Mode Adj 
Default Setting
  Content
1 Adjustment Forward  -99  to  +99 0 Fine Tune Level %
2 Adjustment Reverse  -99  to  +99 0 Fine Tune Level %
3 Adjustment Time Base  -99  to  +99 0 Frequency Counter ,OSC Time Base
4 LCD DIM (Back Light  Time) 0-9 1 "0" is always on,  1 min  to  9 mins
5 POWER OFF 0-9 3 "0" is always on,  1 min  to  9 mins

* Supplier, the product will add functionality without having to give notice

 

  • Set & Save :
  1. Press MENU [Blue button]
  2. Press F1 [Red button)(Select 1-5 Funtion)
  3. Press [Blue button] ( - ), [Yellow button] (+)
  4. Press the  [Red button ]for 2 seconds
  5. Press the  [Blue button] to SAVE and EXIT

 

  • How to check the S.W.R. of your Antenna :
    Connect to "TX" on Radio output  and Antenna  to "ANT".  Proper adaptor/cable is required if your device has different type of connectors.
  1. Measurement V.S.W.R. : (see Pic.1)
  2. SW-102 TX connect Radio RF out  
  3. Radio TX , PM-120W with display S.W.R. measure data.
    Do not affect the test in the following cases, there are objects nearby, placed horizontally.
  • How to check the output Watt of your transceiver :
    Connect to "TX" on Radio output and dummy Load to "ANT".  Proper adaptor/cable is required if your device has different type of connectors.
  1. Measurement Power: (see Pic.2)
  2. PM-120W TX connect Radio RF out  
  3. PM-120W ANT connect 50 ohm Dummy Load
  4. Push Radio TX , PM-120W display is Power  measure data.
    (SW-102 is not for DMR system)
  • Package Contents
  • 1x LATNEX PM-120W UV Power & SWR Meter  (SO239 - connector)
  • 1x Power PSU 100-240V
  • 1x Charger Cable 
  •  1x English Users Manual
  • 1x Ground Plate

OLD VERSION : V3.3 ,V3.8 ,V4.5,V4.9 ,V5.0,V5.1 
2017-8 NEW VERSION :  V2.02 ,V2.03

 

**All Specifications are subject to change without notice

 

 
LATNEX PM-120W     Q & A
       1.      
  •   No Operation?
  1. PLease charge with USB cable  +5V , or come with PSU .
  2. Push and hold on the "RED" botton .
  3.  Replacement battery when battery dead. (below Ver 5.1 use by 14500battery,V1.X use by li-ion polymer battery.
  4. There are still problems with steps 1. and 2.and 3., please contact service center.
  2. 
  •   Watt /SWR read data is not hold on  ?
  1. Some Radio problem when end of TX 
  2. .Radio output TX is not stabilizing.
   3.
  •   Read the watt data is not accurate ?
  1. PM-120W is not for DMR system
  2. Don't not use the antenna get the watt data.
  3. Please use the correct power dummy load to measure (must be 50 OHM)
  4. The data read error when not read the frequency from radio 
  5. The TX input is weak
  6. Input Watt below 0.5W
4.
  •   Read the S.W.R. data is not accurate?
  1. PM-120W is not for DMR system
  2. Do not affect the test in the following cases, there are objects nearby
  3. Do not affect the test in the following cases,placed horizontally.
5.
  •   Read the Frequency counter is not display or read frequency not accurate?
       e.g. Radio is 145.000  , read 145.003
  1. PM-120W is not for DMR system
  2. Input below 0.5W 
  3. Please use menu mode and fine tune the frequency offset.
  6.
  •   Display have problem ? e.g.BLack or Garbled or no Display
  1. Restart  the PM-120W
  2. Remove the inside battery.
  3. There are still problems with steps 1. and 2., please contact service center. 
  7.
  •    How to RESET the mirco chip 
  1. Off mode ,
  2. Hold the Red button when the display show "restore to default "
  3. There are still problems with steps 1. and 2., please remove the battery.
  **All Specifications are subject to change without notice
 
 

VSWR

 (s11)*

Reflected Power (%)

Reflected Power (dB)

1.0

0.000

0.00

-Infinity

1.5

0.200

4.0

-14.0

2.0

0.333

11.1

-9.55

2.5

0.429

18.4

-7.36

3.0

0.500

25.0

-6.00

3.5

0.556

30.9

-5.10

4.0

0.600

36.0

-4.44

5.0

0.667

44.0

-3.52

6.0

0.714

51.0

-2.92

7.0

0.750

56.3

-2.50

8.0

0.778

60.5

-2.18

9.0

0.800

64.0

-1.94

10.0

0.818

66.9

-1.74

15.0

0.875

76.6

-1.16

20.0

0.905

81.9

-0.87

50.0

0.961

92.3

-0.35

 

*(s11) Reflected Power (s11)

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